The Passover from an Astrotheological perspective.

The Passover is the annual passing over of the sun from the southern to the northern hemisphere, according to primitive ideas concerning astronomy.

Foggy Dawn Sunrise in Urunga.  These are the actual colours.

 According to Manly P Hall...

The sacrifice of the lamb at this period was practiced by the pagan Greeks who regarded the vernal equinox as the annual rebirth of the savior god. The ceremony of Easter is the perpetuation of pagan equinoctial rites.   
Images @ Melonpopzdropz  Flickr